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प्रश्न
When two quantities x and y are in ______ proportion or vary ______ they are written as `x oo y`.
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उत्तर
When two quantities x and y are in direct proportion or vary directly, they are written as `x oo y`.
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संबंधित प्रश्न
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| Distance (m) | Time (sec.) | |
| Elevator- A | 435 | 29 |
| Elevator- B | 448 | 28 |
| Elevator- C | 130 | 10 |
| Elevator- D | 85 | 5 |
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- Find the ratio of white keys to black keys on the keyboard.
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- This pattern of keys is repeated on larger keyboard. How many black keys would you expect to find on a keyboard with 14 such patterns.
